@import 'variables';
@import 'default-theme';

$md-progress-bar-height: 5px !default;
$md-progress-bar-full-animation-duration: 2000ms !default;
$md-progress-bar-piece-animation-duration: 250ms !default;

// TODO(josephperrott): Find better way to inline svgs.
/** In buffer mode a repeated SVG object is used as a background.  Each of the following defines the SVG object for each
    of the class defined colors.

    Each string is a URL encoded version of:

    <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"
         version="1.1" x="0px" y="0px" enable-background="new 0 0 5 2"
         xml:space="preserve" viewBox="0 0 5 2" preserveAspectRatio="none slice">
      <circle cx="1" cy="1" r="1" fill="{INJECTED_COLOR}"/>
    </svg>

    */
$md-buffer-bubbles-primary-url: url(
  'data:image/svg+xml;charset=UTF-8,%3Csvg%20version%3D%271.1%27%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27' +
  '%20xmlns%3Axlink%3D%27http%3A%2F%2Fwww.w3.org%2F1999%2Fxlink%27%20x%3D%270px%27%20y%3D%270px%27%20enable-backgroun' +
  'd%3D%27new%200%200%205%202%27%20xml%3Aspace%3D%27preserve%27%20viewBox%3D%270%200%205%202%27%20preserveAspectRatio' +
  '%3D%27none%20slice%27%3E%3Ccircle%20cx%3D%271%27%20cy%3D%271%27%20r%3D%271%27%20fill%3D%27' +
  md-color($md-primary, 100) + '%27%2F%3E%3C%2Fsvg%3E') !default;
$md-buffer-bubbles-accent-url: url(
  'data:image/svg+xml;charset=UTF-8,%3Csvg%20version%3D%271.1%27%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27' +
  '%20xmlns%3Axlink%3D%27http%3A%2F%2Fwww.w3.org%2F1999%2Fxlink%27%20x%3D%270px%27%20y%3D%270px%27%20enable-backgroun' +
  'd%3D%27new%200%200%205%202%27%20xml%3Aspace%3D%27preserve%27%20viewBox%3D%270%200%205%202%27%20preserveAspectRatio' +
  '%3D%27none%20slice%27%3E%3Ccircle%20cx%3D%271%27%20cy%3D%271%27%20r%3D%271%27%20fill%3D%27' +
  md-color($md-accent, 100) + '%27%2F%3E%3C%2Fsvg%3E') !default;
$md-buffer-bubbles-warn-url: url(
  'data:image/svg+xml;charset=UTF-8,%3Csvg%20version%3D%271.1%27%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27' +
  '%20xmlns%3Axlink%3D%27http%3A%2F%2Fwww.w3.org%2F1999%2Fxlink%27%20x%3D%270px%27%20y%3D%270px%27%20enable-backgroun' +
  'd%3D%27new%200%200%205%202%27%20xml%3Aspace%3D%27preserve%27%20viewBox%3D%270%200%205%202%27%20preserveAspectRatio' +
  '%3D%27none%20slice%27%3E%3Ccircle%20cx%3D%271%27%20cy%3D%271%27%20r%3D%271%27%20fill%3D%27' +
  md-color($md-warn, 100) + '%27%2F%3E%3C%2Fsvg%3E') !default;

:host {
  display: block;
  // Height is provided for md-progress-bar to act as a default.
  height: $md-progress-bar-height;
  overflow: hidden;
  position: relative;
  // translateZ is added to force the md-progress-bar into its own GPU layer.
  transform: translateZ(0);
  transition: opacity $md-progress-bar-piece-animation-duration linear;
  width: 100%;

  // The progress bar background is used to show the bubble animation scrolling behind a buffering progress bar.
  .md-progress-bar-background {
    background: $md-buffer-bubbles-primary-url;
    background-repeat: repeat-x;
    background-size: 10px 4px;
    height: 100%;
    position: absolute;
    visibility: hidden;
    width: 100%;
  }

  /**
   * The progress bar buffer is the bar indicator showing the buffer value and is only visible beyond the current value
   * of the primary progress bar.
   */
  .md-progress-bar-buffer {
    background-color: md-color($md-primary, 100);
    height: 100%;
    position: absolute;
    transform-origin: top left;
    transition: transform $md-progress-bar-piece-animation-duration ease;
    width: 100%;
  }

  /**
   * The secondary progress bar is only used in the indeterminate animation, because of this it is hidden in other uses.
   */
  .md-progress-bar-secondary {
    visibility: hidden;
  }

  /**
  * The progress bar fill fills the progress bar with the indicator color.
  */
  .md-progress-bar-fill {
    animation: none;
    height: 100%;
    position: absolute;
    transform-origin: top left;
    transition: transform $md-progress-bar-piece-animation-duration ease;
    width: 100%;
  }

  /**
  * A pseudo element is created for each progress bar bar that fills with the indicator color.
  */
  .md-progress-bar-fill::after {
    animation: none;
    background-color: md-color($md-primary, 600);
    content: '';
    display: inline-block;
    height: 100%;
    position: absolute;
    width: 100%;
  }

  &[color='accent'] {
    .md-progress-bar-background {
      background: $md-buffer-bubbles-accent-url;
      background-repeat: repeat-x;
      background-size: 10px 4px;
    }
    .md-progress-bar-buffer {
      background-color: md-color($md-accent, 100);
    }
    .md-progress-bar-fill::after {
      background-color: md-color($md-accent, 600);
    }
  }

  &[color='warn'] {
    .md-progress-bar-background {
      background: $md-buffer-bubbles-warn-url;
      background-repeat: repeat-x;
      background-size: 10px 4px;
    }
    .md-progress-bar-buffer {
      background-color: md-color($md-warn, 100);
    }
    .md-progress-bar-fill::after {
      background-color: md-color($md-warn, 600);
    }
  }

  &[mode='query'] {
    transform: rotateZ(180deg);
  }

  &[mode='indeterminate'],
  &[mode='query'] {
    .md-progress-bar-fill {
      transition: none;
    }
    .md-progress-bar-primary {
      animation: md-progress-bar-primary-indeterminate-translate $md-progress-bar-full-animation-duration infinite linear;
      left: -145.166611%;
    }
    .md-progress-bar-primary.md-progress-bar-fill::after {
      animation: md-progress-bar-primary-indeterminate-scale $md-progress-bar-full-animation-duration infinite linear;
    }
    .md-progress-bar-secondary {
      animation: md-progress-bar-secondary-indeterminate-translate $md-progress-bar-full-animation-duration infinite linear;
      left: -54.888891%;
      visibility: visible;
    }
    .md-progress-bar-secondary.md-progress-bar-fill::after {
      animation: md-progress-bar-secondary-indeterminate-scale $md-progress-bar-full-animation-duration infinite linear;
    }
  }

  &[mode='buffer'] {
    .md-progress-bar-background {
      animation: md-progress-bar-background-scroll $md-progress-bar-piece-animation-duration infinite linear;
      visibility: visible;
    }
  }
}


// Reverse the apparent directionality of progress vars for rtl.
:host-context([dir='rtl']) {
  transform: rotateY(180deg);
}


/** The values used for animations in md-progress-bar, both timing and transformation, can be considered magic values.
    They are sourced from the Material Design example spec and duplicate the values of the original designers
    definitions.


    The indeterminate state is essentially made up of two progress bars, one primary (the one that is shown in both the
    determinate and indeterminate states) and one secondary, which essentially mirrors the primary progress bar in
    appearance but is only shown to assist with the indeterminate animations.


    KEYFRAME BLOCK	                    DESCRIPTION
    primary-indeterminate-translate     Translation of the primary progressbar across the screen
    primary-indeterminate-scale         Scaling of the primary progressbar as it's being translated across the screen
    secondary-indeterminate-translate   Translation of the secondary progressbar across the screen
    secondary-indeterminate-scale       Scaling of the secondary progressbar as it's being translated across the screen

    Because two different transform animations need to be applied at once, the translation is applied to the outer
    element and the scaling is applied to the inner element, which provides the illusion necessary to make the animation
    work.
*/

// Progress Bar Timing functions:
// $md-progress-bar-primary-indeterminate-translate-step-1 has no timing function.
$md-progress-bar-primary-indeterminate-translate-step-2: cubic-bezier(0.5, 0, 0.701732, 0.495819) !default;
$md-progress-bar-primary-indeterminate-translate-step-3: cubic-bezier(0.302435, 0.381352, 0.55, 0.956352) !default;
// $md-progress-bar-primary-indeterminate-translate-step-4 has no timing function.

// $md-progress-bar-primary-indeterminate-scale-step-1 has no timing function
$md-progress-bar-primary-indeterminate-scale-step-2: cubic-bezier(0.334731, 0.12482, 0.785844, 1) !default;
$md-progress-bar-primary-indeterminate-scale-step-3: cubic-bezier(0.06, 0.11, 0.6, 1) !default;
// $md-progress-bar-primary-indeterminate-scale-step-4 has no timing function

$md-progress-bar-secondary-indeterminate-translate-step-1: cubic-bezier(0.15, 0, 0.515058, 0.409685) !default;
$md-progress-bar-secondary-indeterminate-translate-step-2: cubic-bezier(0.31033, 0.284058, 0.8, 0.733712) !default;
$md-progress-bar-secondary-indeterminate-translate-step-3: cubic-bezier(0.4, 0.627035, 0.6, 0.902026) !default;
// $md-progress-bar-secondary-indeterminate-translate-step-4 has no timing function

$md-progress-bar-secondary-indeterminate-scale-step-1: cubic-bezier(0.15, 0, 0.515058, 0.409685) !default;
$md-progress-bar-secondary-indeterminate-scale-step-2: cubic-bezier(0.31033, 0.284058, 0.8, 0.733712) !default;
$md-progress-bar-secondary-indeterminate-scale-step-3: cubic-bezier(0.4, 0.627035, 0.6, 0.902026) !default;
// $md-progress-bar-secondary-indeterminate-scale-step-4 has no timing function

/** Animations for indeterminate and query mode. */
// Primary indicator.
@keyframes md-progress-bar-primary-indeterminate-translate {
  0% {
    transform: translateX(0);
  }
  20% {
    animation-timing-function: $md-progress-bar-primary-indeterminate-translate-step-2;
    transform: translateX(0);
  }
  59.15% {
    animation-timing-function: $md-progress-bar-primary-indeterminate-translate-step-3;
    transform: translateX(83.67142%);
  }
  100% {
    transform: translateX(200.611057%);
  }
}

@keyframes md-progress-bar-primary-indeterminate-scale {
  0% {
    transform: scaleX(0.08);
  }
  36.65% {
    animation-timing-function: $md-progress-bar-primary-indeterminate-scale-step-2;
    transform: scaleX(0.08);
  }
  69.15% {
    animation-timing-function: $md-progress-bar-primary-indeterminate-scale-step-3;
    transform: scaleX(0.661479);
  }
  100% {
    transform: scaleX(0.08);
  }
}

// Secondary indicator.
@keyframes md-progress-bar-secondary-indeterminate-translate {
  0% {
    animation-timing-function: $md-progress-bar-secondary-indeterminate-translate-step-1;
    transform: translateX(0);
  }
  25% {
    animation-timing-function: $md-progress-bar-secondary-indeterminate-translate-step-2;

    transform: translateX(37.651913%);
  }
  48.35% {
    animation-timing-function: $md-progress-bar-secondary-indeterminate-translate-step-3;
    transform: translateX(84.386165%);
  }
  100% {
    transform: translateX(160.277782%);
  }
}

@keyframes md-progress-bar-secondary-indeterminate-scale {
  0% {
    animation-timing-function: $md-progress-bar-secondary-indeterminate-scale-step-1;
    transform: scaleX(0.08);
  }
  19.15% {
    animation-timing-function: $md-progress-bar-secondary-indeterminate-scale-step-2;
    transform: scaleX(0.457104);
  }
  44.15% {
    animation-timing-function: $md-progress-bar-secondary-indeterminate-scale-step-3;
    transform: scaleX(0.72796);
  }
  100% {
    transform: scaleX(0.08);
  }
}

/** Animation for buffer mode. */
@keyframes md-progress-bar-background-scroll {
  to {
    transform: translateX(-10px);
  }
}
